Made from polyimide film with a silicone adhesive. Recommended for masking small areas on circuit boards; Discase are on a liner which is wound on a 3” core; Silicone adhesive will not leave any residue; Withstands temperatures of up to 500 degrees F; Applications include: Masking circuit boards during wave soldering, powder coating, and automotive and transformer manufacturing; 1 Roll per case. This product is equivalent to part number: S-17221. Sold in a quantity of 1000 per case.